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Wednesday, November 5 • 09:00 - 09:40
Better Async Error Reporting in Cinder

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Led by: Winston and Alex
A few 'special' create requests would by-pass scheduler in current Cinder work flow (i.e. API service directly sends requests to Volume service), such as creating snapshot, volume clone, volume from snaphot or volume replica. The intention for introducing such shortcut was because scheduler wasn't aware that such requests don't really need scheduling due to the fact that most storage backends doesn't support doing a snapshot of a volume that doesn't resides on it or create a clone of the volume on other backend. But in the cases where storage backend doesn't have enough capacity to serve the request, scheduler actually can be a good place to stop the request from going further.

Wednesday November 5, 2014 09:00 - 09:40 CET

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